Abstract
Selection and breeding for aluminum tolerance is a useful approach to increase maize (Zea mays L.) grain yield in acid soils. The objective of this work was the comparison between two screening approaches for the development of Al tolerant maize populations. One cycle of divergent selection for aluminum tolerance, using both nutrient solution and pots with acid soil, were completed in the maize population SIKALQ. The four sub-populations selected through both selection procedures were compared with the original population and checks in field trials repeated over locations. Eight environments stratified into four groups varying from non acid to high aluminum saturation were used. Three variables were analyzed for comparisons of methodologies: grain yield, plant height and days to male flowering. The populations performed similarly in the high productivity locations and the differences between tolerant and sensitive ones were more evident for increasing levels of toxic aluminum. In spite of little differences, selection in pots with acid soil was more efficient than nutrient solution in changing the genetic structure of the population toward more tolerant and sensitive levels.
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Claims 3
Claim · model-written summary
Maize populations performed similarly in the high productivity locations.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Selection and breeding for aluminum tolerance is a useful approach to increase maize (Zea mays L.) grain yield in acid soils”
e1“The populations performed similarly in the high productivity locations”
Claim · model-written summary
Differences between tolerant and sensitive maize populations were more evident at increasing levels of toxic aluminum.
- Treatment
- increasing levels of toxic aluminume2
- Outcome
- differences between tolerant and sensitive onese2
- Direction
- more evidente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Selection and breeding for aluminum tolerance is a useful approach to increase maize (Zea mays L.) grain yield in acid soils”
e2“the differences between tolerant and sensitive ones were more evident for increasing levels of toxic aluminum”
Claim · model-written summary
Selection in pots with acid soil was more efficient than selection in nutrient solution in changing the genetic structure of the maize population.
- Treatment
- selection in pots with acid soile3
- Outcome
- changing the genetic structure of the populatione3
- Direction
- more efficiente3
- Qualifier
- In spite of little differencese3
- Comparator
- nutrient solutione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Selection and breeding for aluminum tolerance is a useful approach to increase maize (Zea mays L.) grain yield in acid soils”
e3“In spite of little differences, selection in pots with acid soil was more efficient than nutrient solution in changing the genetic structure of the population toward more tolerant and sensitive levels”
The same questions in other papers
ph · pest · Zea mays (maize)Positive and negative results
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